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Product description

The K-Tor Power Box is a 20 Watt pedal generator with an universal international power socket. Plug in your wall charger and charge your portable electronics at the same rate as plugging in a wall outlet. You can charge multiple devices at once up to 20 watts or an external 12 volt battery to power larger devices like laptops or appliances with 12 volt power stream charger sold seperately.

Top customer reviews

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Overall I really like this for a manually powered emergency/camping charger. It folds up into what is barely a shoe box size block, can be put together quickly and easily, has an imbedded all-in-one multi-plug socket (standard US, UK, and and looks like other countries electrical connectors I've never used), and generates a nice amount of electricity without much effort (far easier than hand cranks). I've used it for about a week or so now to charge up my phone and tablet and have had excellent results. I only tried charging my phone and tablet at the same time once with an extension cable and it seems to work nicely as well, however I didn't pedal for terribly long that time so it was a partial test only.

There are two items to note. One, it is a manual generator with no battery. So if you're not pedaling you won't be able to charge anything. Two, it is very light weight (nice) but because of that it is also very unstable. The manual suggests screwing/clamping it down to something. This is a good idea if possible, otherwise you need to sit with your legs directly over it so it doesn't slide away, which can make pedaling a little awkward. However both of these are noted by the products manufacturer and I pretty much knew/expected it so I didn't feel the need to knock of a star in the ratings since they weren't a surprise.

I live off grid and the winter is not very kind on my solar panels when it comes to charging things, I bought this to charge my cell and some flashlight batteries. since winter is the time when people gain a little weight this is a good way to burn a few caloires (like an exersize bike) while charging some small stuff.

I would rate this product five stars because Ken Torino, the designer has shown an incrediblewillingness to work with me, a very demanding customer. I went with four stars because there isroom for improvement. The product performs as advertised and generated enough power to keep yourcell phones and tablets charged. The design is innovative, and the portability excellent. My goal was to use it as an exercise bikeand the stress of the weight and force pedalling exerts caused the Powerbox to break. This is not the fault of the Powerbox per se, it doesthe job. The housing is plastic and not intended to be stepped on, or abused like a bicycle. Let's face it bikes are made of steel.The product is terrific for Apple Products and chargers. My Samsung Galaxy Note 3 and Samsung Note 10.1 with two amp chargerstaxed the Powebox to the limit, mainly because Samsung has maxed out fast charging and as long as I used the Powerbox as a handpedal unit it was reliable. Using the Powerbox in that fashion provides a great upper body workout. I have two Powerboxes and I am satisfied. My only complaint that may not be possible to correct is the unit is noisy and sounds like an electric drill. In a hurricane or blackout, who cares, right. If you use this every day for charging your phones in the house or an apartment expect some negative feedback from those not pedalling. It is annoying. Ken has indicated he is working on a more robust higher power design, and I expect that will beanother breakthrough in Generator design. If you ar an enthusiastic Prepper or just an interested engineering type who cares about power generation and emergency services, I wouldn't wait, I'd buy a Powerbox. If you have a problem K-Tor has the best customer service I have ever dealt with.

The unit had a problem where the resistance is not constant. Every three times around, the pedal force increases dramatically, then let up again for three more turns. Made it impossible to pedal at a constant pace.

(EDIT: 5 stars now, turns out I had plugged too much into it. The device adjusts the resistance automatically for the power draw, and I was over-loading it. Works great now. The way I was using it was actually the problem. Great response from the company, sorted me out in no time.

My experience with this generator and the company who invented this has been very pleasant. When my shipment came, my ktor generator had a problem after a few weeks using it. It was no longer working for some reason, so I had to return it back. The company accepted my request and shipped me a fully working one without any hassle. Great power back up during times of emergency. The only thing I couldn't figure is how to charge a 12 volt battery...

It charges well and the construction feels sturdy but it slides around constantly (Which i expected). My main problem is the right pedal unscrews itself after several dozen rotations. Ive tried tightening and over tightening it but it always unscrews.